客户挽留阶段要实时掌握客户的消费动态、及时跟踪客户消费周期、提前中止客户离网的可能。

At the last stage, customers retention stage, we must control the consumer trends, consumption cycle, and the possibility of off-net in ahead.

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第4章：介绍了客户离网的预测模型方法，给出了详细的客户离网建模过程方法，并在电信企业的应用中进行验证。

Chapter 4: Present predictive models about churned clients. Provide detailed ways to establish models which has proven its practicability in telecom corporations' applications.

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因此，减少大客户流失是移动运营商的战略任务，而能否及时预警可能离网的大客户则是能否顺利完成该战略任务的关键。

Therefore, to reduce customer loss is the strategic task for mobile operators and if the possibility of leaving-network large clients can be alarmed in time is the key to complete the strategic task.

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